CN100390436C

CN100390436C - Disk spring

Info

Publication number: CN100390436C
Application number: CNB2005101196034A
Authority: CN
Inventors: 尹学军
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-06-11
Filing date: 2003-06-11
Publication date: 2008-05-28
Anticipated expiration: 2023-06-11
Also published as: WO2004109147A1; CN1263967C; CN1776247A; JP2006527340A; EP1643155A4; EP1643155A1; CN1470779A

Abstract

The present invention belongs to a spring, which comprises a spring body and a damping body, wherein the damping body produces damping action on the motion of the spring and comprises high damping materials. Because the damping body is arranged on the spring, when the spring is stressed to vibrate, the damping body deforms, and very large internal friction is generated in the damping materials. Thus, vibration energy is quantitatively changed into heat energy to be consumed, and vibrations are weakened quickly and even disappear. Because noise is caused by the vibrations, the noise is greatly reduced.

Description

The dish spring

Technical field

The invention belongs to spring.The application is dividing an application of No. 03112550.6 application for a patent for invention, and original application day is on June 11st, 2003, and denomination of invention is a spring.

Background technique

Common spring is made by pure elastic material, and its damping is very little, especially metal spring.In practice, in order to increase its damping, sometimes adopt way with the spirochetal whole outside of spring cover one deck rubber pipe, or at dish spring surface sulfuration one deck rubber, as patent CN2213255Y, a kind of viscoelastic material but rubber is fundamentally said so, under the high frequency action condition, as vibration and noise to audio range, have certain damping, concerning most of mechanical vibration, its damping ratio has only 1-3%, damping ratio is littler during in parallel use with spring, in most of the cases damping ratio is nowhere near, for example for general vehicle, the vibration damping of equipment and vibration isolation require damping ratio between 10%-30%, at this moment must cooperate extra damping device to use, make complex structure.

Summary of the invention

The objective of the invention is to overcome above-mentioned defective, a kind of dish spring that has damping-constraining itself is provided.

For achieving the above object, the present invention includes the reed of dish, reed embeds in the damping body that contains high damping material at least in part, damping body is open tubular column or ring, wherein on the damping body inner and outer circumferential surfaces, be provided with when making the damping body distortion and can the elastic restraint body perhaps be set its bigger obligatory point of rigidity that produces constraint and shear.Between the reed or reed damping body surface or inside up and down is provided with toroidal cavity or high-elastic gonosome; Several reed body serial or parallel connections.Adhere to restriction damping layer in annular surface to small part along reed.In reed upper and lower surface that damping layer is set or inside toroidal cavity or high-elastic gonosome are set.

The said high damping material of the present invention comprises viscoelasticity high damping material and viscoplastic material, and as high-damping rubber, high-damping polyurethane, high damping modified pitch etc., its material damping ratio can reach more than the 30-50%.And the damping ratio of one section elastic material is between 0.1-1%, and General Purpose Rubber is about 1%-3%.Damping material of the present invention also comprises with above-mentioned damping material and is matrix, is added with the material of other packing, comprises the packing that can increase damping material distortion in-fighting and damping, as carbon fiber, glass fibre, mica flour etc.

Such scheme can also be provided with one deck elastic material at the outer surface of spring, because the high damping material spring has damping force equally when unloading, when stoping recoil of spring, also hinder resetting of oneself, the intensity of high damping material generally is weaker than the elastic material of same base material simultaneously, this elastic restraint layer that is provided with can help damping material to reset more completely, and is difficult for being damaged, as friction and collision.

Part surface at least at reed adheres to the damping material layer; At least the big restraint layer of one deck ratio of rigidity damping material can also be set outside the damping material layer again.

The present invention is owing to be provided with damping body and obligatory point on dish spring body, when stressed generation vibration of dish spring or distortion, damping body produces distortion thereupon, can produce bigger interior friction in the damping material, consumes portion of energy.

Make and become

Shape is subjected to hindering, vibration is decayed; Because noise also vibrates and causes, so noise also alleviates greatly.The present invention provides higher damping ratio owing to adopted high damping material, can provide enough damping ratios to the vibration damping of most machinery and vehicle structure, even in the very high occasion of the damping ratio of needs, what required extra damping also can be little is many.Just no longer need to cooperate in addition damping device in the ordinary course of things, thereby simplify the structure.In addition, the present invention has also eliminated this resonance under natural frequency of spring effectively.

Description of drawings

Fig. 1 is the embodiment of the invention 1 an overall structure schematic representation;

Fig. 2 is the embodiment of the invention 2 overall structure schematic representation;

Fig. 3 is the embodiment of the invention 3 overall structure schematic representation;

Fig. 4 is the embodiment of the invention 4 overall structure schematic representation;

Fig. 5 is the embodiment of the invention 5 overall structure schematic representation;

Fig. 6 is the embodiment of the invention 6 overall structure schematic representation;

Fig. 7 is the embodiment of the invention 7 overall structure schematic representation.

Embodiment

Embodiment 1:

Referring to Fig. 1, the dish spring group 5 that a plurality of dish springs constitute all embeds in the tubulose damping bodies 2, during folded spring distortion, damping body 2 is formed shear and extruding, because that damping body 2 is provided with is hollow, makes its easy deformation.

Damping body is the high damping modified pitch that is solid-state (viscoplasticity) under the normal temperature.During dish spring stress deformation, damping body is stress deformation simultaneously, because damping material has bigger interior friction, can produce opposite with moving direction all the time damping force, and therefore the spring of this structure has big damping ratio.

Embodiment 2:

Referring to Fig. 2, the dish spring group 5 that a plurality of dish springs constitute integrally embeds in the tubulose damping body 2, and between its reed toroidal cavity 6 is arranged, so damping body is subjected to shear deformation than embodiment 1 is easier, has better linear rigidity and damping ratio.Inner and outer surface at damping body also is provided with one deck elastic material as obligatory point 8, and it can help damping material to reset more up hill and dale when unloading, and the protection damping material is not collided by the friction of directional post and external force.

Embodiment 3:

Shown in Figure 3, dish spring 5 monolithics embed in the hollow damping body 2, and its shape of cross section is roughly concentric similar to the shape of cross section of reed, does not just have damping body in the contact area of dish reed, in order to avoid damping body is by local squeeze and destroy or extruding permanent deformation.Present embodiment sexually revises not quite spring wire, is fit to damping and requires not too high but linear occasion of having relatively high expectations, because monolithic is implemented, can be mass-produced.Damping body should select for use be fit to efficient, produce in enormous quantities, as can spraying, the damping material of dip-coating, coating or cast, as high-damping polyurethane.

Embodiment 4:

Referring to Fig. 4, on embodiment 3 basis, damping body 2 is a hollow cylinder, easier making on production technology, and upper and lower surface is provided with scrobicular ring, to reduce the damping body of crush zone, avoids the non-linear rapid increase of dish spring.

Embodiment 5:

Referring to Fig. 5, two dish reeds 5 folded mutually in the same way (rigidity is in parallel) embed in the same damping body, and damping body 2 is a hollow cylinder, between two reeds 5 high damping material is arranged, then two groups of series connection.

Embodiment 6:

Referring to Fig. 6, on embodiment 5 basis, two groups of dish reeds 5 folded mutually in the same way (rigidity is in parallel) embed in the same damping body 2, and damping body 2 cross sections and dish reed 5 cross section broadly similars have high damping material between two reeds 5, then two groups of series connection.

Embodiment 7:

Referring to Fig. 7, two dish reeds 5 folded mutually dorsad (rigidity is series connection) embed in same damping body 2, and damping body 2 be a hollow cylinder, and high damping material is arranged between two reeds 5, between the reed 5 and on have hollowly 6, connect then.

Among the embodiment 3～7, enumerated different schemes, this is because different dish spring arrangements has different mechanical properties.The dish spring is folded mutually in the same way, is the rigidity parallel connection, and global stiffness increases and is twice; The dish spring is folded mutually dorsad, is the rigidity series connection, and global stiffness reduces by half; In the practice, can take the combination of different sheets and sheet combination and group and group according to this characteristic.

Because a lot of damping materials have the volume incompressibility, if the compressive region at damping body gathers more solid damping material, damping body will be pressed against the Vertical direction of active force, and it is more non-linear that the camber of spring curve can be, and damping body might be because of being out of shape excessive destruction simultaneously.Hollow damping body or high-elastic gonosome are set, and the elastic restraint body is set inside and outside damping body can avoids this kind situation to take place.

Claims

1. dish spring, it comprises the reed of dish, wherein reed embeds in the damping body that contains high damping material at least in part, damping body is open tubular column or ring, it is characterized in that being provided with on the damping body inner and outer circumferential surfaces when making the damping body distortion and can the elastic restraint body perhaps be set its bigger obligatory point of rigidity that produces constraint and shear.

2. dish spring according to claim 1 is characterized in that between the reed or reed damping body surface or inside up and down is provided with toroidal cavity or high-elastic gonosome.

3. dish spring according to claim 1 is characterized in that several reed body serial or parallel connections.

4. dish spring, it comprises the reed of dish, wherein reed embeds in the damping body that contains high damping material at least in part, it is characterized in that adhering to restriction damping layer along annular surface to the small part of reed.

5. dish spring according to claim 4 is characterized in that reed damping layer surface or inside up and down is provided with toroidal cavity or high-elastic gonosome.